Percentage Calculator: Complete Guide
Use the percentage calculator for quick everyday math, including finding a percentage of a number and comparing percentage increases or decreases. It is useful for discounts, budgeting, marks, business figures, and price changes.
How to Use This Calculator
- Enter the base or total number.
- Enter the percentage you want to calculate.
- Compare the direct percentage, increase, and decrease results.
Calculation Formula
Percentage value = Base number × Percentage ÷ 100
20% of 1,500 is 300. Adding 20% gives 1,800, while reducing 1,500 by 20% gives 1,200.
Frequently Asked Questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide the result by 100.
Is a 20% increase followed by a 20% decrease the original value?
No. Percentage changes apply to different bases, so the final amount will usually be different from the starting amount.
Related Calculators
Check the base value and units before using a percentage result in a financial or business decision.